b0687062bd
This is an automatically generated commit which aids following Kernel patch history, as git will see the move and copy as a rename thus defeating the purpose. For the original discussion see: https://lists.openwrt.org/pipermail/openwrt-devel/2023-October/041673.html Signed-off-by: Kenneth Kasilag <kenneth@kasilag.me> Link: https://github.com/openwrt/openwrt/pull/21019 Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
33 lines
1.2 KiB
Diff
33 lines
1.2 KiB
Diff
From 0743acf746a81e0460a56fd5ff847d97fa7eb370 Mon Sep 17 00:00:00 2001
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From: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
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Date: Sun, 12 Oct 2025 15:17:04 +0300
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Subject: [PATCH 13/14] spi: airoha: buffer must be 0xff-ed before writing
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During writing, the entire flash page (including OOB) will be updated
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with the values from the temporary buffer, so we need to fill the
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untouched areas of the buffer with 0xff value to prevent accidental
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data overwriting.
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Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
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Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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Link: https://patch.msgid.link/20251012121707.2296160-14-mikhail.kshevetskiy@iopsys.eu
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Signed-off-by: Mark Brown <broonie@kernel.org>
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---
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drivers/spi/spi-airoha-snfi.c | 4 ++++
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1 file changed, 4 insertions(+)
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--- a/drivers/spi/spi-airoha-snfi.c
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+++ b/drivers/spi/spi-airoha-snfi.c
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@@ -776,7 +776,11 @@ static ssize_t airoha_snand_dirmap_write
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return -EOPNOTSUPP;
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}
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+ if (offs > 0)
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+ memset(txrx_buf, 0xff, offs);
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memcpy(txrx_buf + offs, buf, len);
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+ if (bytes > offs + len)
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+ memset(txrx_buf + offs + len, 0xff, bytes - offs - len);
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err = airoha_snand_set_mode(as_ctrl, SPI_MODE_DMA);
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if (err < 0)
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